$y^2+2x=2$
$\frac{\tan4\left(x\right)+\tan2\left(x\right)}{1-\tan4\left(x\right)\tan2\left(x\right)}$
$\left(2a^2+3\right)\left(2a^2+4\right)$
$\int\frac{3x^3}{\sqrt{x^2-25}}dx$
$a^2-5a+25$
$\lim_{x\to0}\frac{8x^3+3x^2-x}{3x^4+x^2}$
$\frac{x^3+4x+3}{x+3}$
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